26-Ring-Channel Structure Constructed from Bimetal Phosphite Helical Chains

摘要

Since the preparation of the AlPO_4 family with zeolite structures and the discovery of 14.1 A channel in mineral cacoxenite were reported, the synthesis of inorganic open frameworks with extralarge channels has been intensively studied in the systems of silicates, germinates, and metal phosphates. With larger pores or channels in structure, more applications may be realized to meet the increasing demand on advanced materials for performing shape-selective catalysis on reactants too large to enter the pores of currently employed industrial catalysts, designing low-k materials and MRI contrast reagents as well as gas storage materials with extraordinarily high capacity. Recent discovery on the novel photoluminescence property of microporous structures has also extended their use from molecular sieve to inorganic phosphor as a new class of intrinsic luminescence materials.